Biology 1-6 discrete Flashcards Preview

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Flashcards in Biology 1-6 discrete Deck (37)
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1
Q

Lactase

A

brush-border enzyme that starts in oral cavity

2
Q

Bile created by… and stored in…

A

created by the liver and stored in the gallbladder

3
Q

pepsin is in the …

A

stomach

4
Q

trypsin is in the …

A

pancreas

5
Q

Causes a right shift in the oxyhemoglobin curve (5)

A

exercise increased PaCO2, H+, temperature Decreased pH

6
Q

Hardy Weinberg equilibrium

A

relative frequency of dominant allele + relative frequency of recessive allele = 1

7
Q

Aldosterone (4)

A

increase sodium reabsorption increase potassium excretion increase blood pressure decrease water excretion

8
Q

more than one dominant allele exists for a given gene

A

Codominance

9
Q

occurs when a heterozygote expresses a phenotype the tis intermediate b/t the two homozygous genotypes

A

Incomplete dominance

10
Q

a population measure of the proportion of individuals int eh population carrying the allele who actually express the phenotype (the probability that, given a particular genotype) a person will express the phenotype

A

penetrance

11
Q

explains the variability in phenotype for one genotype

A

expressivity

12
Q

seminiferous tubules

A

sperm production

13
Q

cells of leydig

A

testosterone production

14
Q

sperm holding tank

A

epididymis

15
Q

these nourish sperm

A

Sertoli cells

16
Q

Inside cell low (6)

A

Na+, Ca2+, Mg2+, Cl-, HCO3-, Albumin

17
Q

inside cell high (3)

A

K+, PO43-, organic anions, proteins

18
Q

Outside cell low (4)

A

K+, PO43-, organic anions, proteins

19
Q

Outside cell high (6)

A

Na+, Ca2+, Mg2+, Cl-, HCO3-, Albumin (in plasma only)

20
Q

Inside cell low is the same thing as

A

outside cell high

21
Q

In a virus, the nucleic acid can be…

A

either DNA or RNA and either single- or double-stranded

22
Q

Golgi apparatus consists of and it’s functions

A

It consists of a stack of membrane-enclosed sacs; modifies and distributes proteins

23
Q

In the cell, protein synthesis occurs in

A

ribosomes and rough ER

24
Q

Lipid and carbohydrate breakdown takes place in

A

peroxisomes and cytoplasm

25
Q

in a cell, structure for ATP production

A

mitochondria

26
Q

Mitochondrial DNA is (3 things)

A

circular, self-replicating, double-stranded

27
Q

Smooth ER functions (3 things)

A

lipid synthesis, poison detoxificaiton, protein transport

28
Q

main function of the nucleolus

A

Ribosomal RNA synthesis

29
Q

Organelle surrounded by a single membrane?

lysosome

mitochondria

nuclei

ribosome

A

lysosome

30
Q

Which of the following does not contain tubulin?

centriole

micorfilaments

cilia

flagella

A

microfilaments

31
Q

During an outbreak, HSV is in its… cycle

whereas when it’s dormant, it’s in it’s…

A

outbreak = lytic cycle

dormant = lysogenic cycle

32
Q

sexual mating in bacteria

A

conjugation

33
Q

when fragments of the bacterial chromosome accidentally become packaged into viral progeny produced during a viral infection and htus can be introduced into another bacterium by the viral vector

A

transduction

34
Q

bacterial cells reproduce by…

A

binary fission

35
Q

prions

A

infectious proteins that cause misfolding of other proteins

36
Q

primarily, prions cause…

A

a shift toward β-pleated sheet confirmations which leads to decreased solubility and degradability of proteins

37
Q
A